S4G stands for "Sensors for Gaming" and is a research area that focuses on the development and integration of sensors into gaming technology. These sensors can include motion sensors, biometric sensors, environmental sensors, and more, all aimed at enhancing the gaming experience. Researchers in the S4G field explore how these sensors can be used to create more immersive and interactive gameplay, improve player performance, and even track player health and wellbeing. Overall, S4G research aims to push the boundaries of gaming technology and create new and innovative gaming experiences for players.